Modern steel hardening plants.--Hardening steel, by E.R. Markham.--Pack-hardening gages, by E.R. Markham.--Forging, hardening and annealing high-speed steel, by W.J. Todd.--Local hardening and tempering, by W.A. Painter.--Electric hardening furnaces.--Miscellaneous hardening methods and suggestions
Copyright-evidenceEvidence reported by ian white for item hardeningtemperi00markrich on February 2, 2007: visible notice of copyright; stated date is 1912.